Floor furnace



E. E. LEACH FLOOR FURNACE Aug. 27, 1929,

Filed Nov. 25, 192'? M M m m u u ATTORNEY Patented Aug. v27, 1929.

narra srarss EDWARD E. LACH, 4OI FRANKLIN, PENNSYLVANIA.

' FLOOR FURNAGE.

Application filed November 25, 1927. Serial No. 235,523.

VThe object of this invention 'is' to provide a floor furnace, alsoknown as pipeless furnace, of comparatively small size for use inheating individual rooms or other comparatively small areas, and fromwhich the heated air passes ldirectly upward into the area to be heated,instead of being conducted thereto through pipes which offer aconsiderable degree of resistance to the passage of the heated air.

My improved furnace is clearly illustrated in the accompanyingvdrawingsin which:

Fig. 1 is a central, vertical section,

Fig. 2 is a transverse section on line lil- II of Fig. 1,

Fig. 3 is an elevation of the adjacent side of Fig. 1, i. e. a frontview.

Fig. l is an inverted plan view, partly in transverse section on lineIV-IV of Fig. 1.

The construction illustrated in said drawings is substantially asfollows:

The combustion chamber and dome is indicated by the reference numeral 1,in the lower portion of which chamber is locatedl a suitable heatgenerating means such as a gas burner 2; a baffle plate 3 is attached tothe lower edge of one wall of said chamber and extends diagonally upwardtherefrom with its upper edge in proximity to the top plate of or wallof said dome. Upon lthe opposite side of said plate from the burner 2and near the bottom of said chamber is located a flue 4.1. for theescape of the products of combustion7 as indicated by the arrows withinthe combustion chamber of Fig. 1.

Surrounding said combustion chamber `is a lower jacket 5 and an upperjacket 6. Said jackets 5 and 6 and their respective enclosures areseparated from each other by the transverse diaphragm or partition 7,but communication is provided therebetween through the perforations 8 topermit the heatedy air in the lower chamber 9 to pass into the warm aircurrent of the upper chamber.

Within the upper chamber is inserted and secured a concentric shell 10which divides said upper chamber into a cold air passage 11 and a warmair passage 12. The cold air passage is the space between the jacket 6and said shell 10, and the warm air passage is the space between saidshell 10 and the adjacent walls of the dome l.

Said shell 10 is supported upon the legs 13 with its lower edge spacedabove the adjacent face of the transverse partition or frame 7 for thepurpose of permitting the flow of air beneath the same from the cold airpassage 11 to the warm air passage 12. The top edge of the walls of saidshell coincides substantially with the upper edge of the walls of thejacket 6.,

The warm air chamber above the dome 1 is provided with a bafflestructure which comprises a horizontally disposed, ,rectangular frame14:, above the opening of which is spaced and supported a horizontalbaille plate 15; this baffle structure is for the purpose of retarding,somewhat, the upward flow of air through the warm air chamber so as tocause it to impinge more closely upon the walls of said dome and becomemore highly heated than it otherwise would.

Within the lower portion of said combustion chamber is located a burner2 for the use of a gaseous or a liquid fuel as desired, or it may beelectrically heated. Free access to said burner is had through a door 16which is hinged at 17 and is yieldably retained in its closed positionby a coil spring 18. Superposed upon the upper edge of the jacket 6 andsuitably attached thereto is 'a floor register 19, the upper face ofwhich is intended to be flush with the surface of the floor. The upperedge of the shell 10 has close Contact with the under face of saidregister whereby that portion of said register which is above thepassagell serves as a cold air inlet and that portion of said registerlwhich is above the passage 12 and its warm air chamber serves as a warmair outlet.

The openings 2O lead into and are a portion of the lower chamber 9, andare for the ingress of air thereto as are also the openings 21; thisarrangement of said lower chamber conserves and utilizes the heat thatis imparted thereto by said heat generating member 2.

I claim the following:

1. In a floor furnace, a dome, the lower portion of which forms acombustion chamber, heat-generating means located in said combustionchamber, a flue leading from said combustion chamber for the egress ofthe products of combustion, an upwardly diagonally extending baffleplate interposed between said heat generating means and said flue, ajacket surrounding said domey with its side walls spaced from the sidewalls of said dome and extending thereabove whereby an intervening airspace is formed, which is interior portion of which is adapted to con--tain a heat-generating means, heat-generating means within said lowerportion of said dome, a flue leading from said lower portion of saiddome for the egress of products therefrom, an upwardly,diagonally-extending baffle plate interposed between said'heatgeneratingmeans and said flue, a jacket surrounding said dome with its side wallsspaced from the side walls of said dome whereby an intervening airchamber is formed which is divided transversely below its center bymeans of a transverse diaphragm or partition into two vertically relatedchambers, perforations in said diaphragm for the passage of air fromsaid lower to said upper chamber, a concentrically arranged shell withinthe upper of said air chambers with its walls positioned intermediatethe walls ot said dome and said jacket the lower edge of the walls ofsaid shell being spaced above the adjacent face of said diaphragm, andthe upper edge thereof coinciding substantially with the upper edge ofthe side walls of said jacket whereby said upper chamber is divided intotwo concentric passages for the purpose specified, and a floor registerforming. the top of and completing the furnace.

In testimony whereoil I affix my siOnature.

EDWARD y E. 'LECH

